Avaya VTCPD Features (Software Release 2.1 on MPS 2.1) Manuale Utente Scaricare il pdf (Pagina 75)

VTCPD Application Programming

P0602483 Ver: 03.41 Page 75

Soliciting Host Data on page 73.)

An application that solicits data from the host can reserve and release a host

connection. However, if there is a limited pool of slots, the application can limit the

time it reserves the slot by sending and receiving data without reserving and releasing

the host connection (see Releasing Connection Slot and Handling Exceptions on

page 69.)

VTCPD releases the slot after the application receives the host data.

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Release 6.0 1
Table of contents 3
Chapter 4 — VTCPD Messages 45 4
Chapter 7 — Index 111 5
Intended Audience 8
How to Use This Manual 8
Organization of This Manual 9
VTCPD Features User Manual 10
Trademark Conventions 11
Avaya VTCPD Over 13
Host Communications Overview 14
Avaya VTCPD Overview 15
MPS Software Architecture 16
Avaya VTCPD Features 18
Application-Defined Mode 20
UDP Mode 20
Avaya VTCPD Con 21
Configuration 22
The services File 22
Avaya VTCPD Daemon Names 22
Avaya VTCPD Port Assignments 22
P0602483 Ver: 03.41 Page 23 23
Variable Description 23
Options Overview 24
P0602483 Ver: 03.41 Page 25 25
Connection Options 26
Host Connection Options 26
#: [port] 27
Single Host Connection 28
Multiple Hosts Connections 28
One Connection Per Line 28
Multiple Avaya VTCPD Daemons 28
Channel Number 31
Attaching to VMST 34
Application-Host Options 36
Monitoring Host Connections 38
Backup LAN 38
Time-Outs 39
P0602483 Ver: 03.41 Page 41 41
P0602483 Ver: 03.41 Page 43 43
VTCPD Messages 45
Message Format 46
Message Identification (ID) 50
Message Routing 53
ISSUE-SEND-RECEIVE (ISR) 54
Reserving a Slot 57
Queuing Requests 57
Clearing the Connection 58
Changing Data Length 59
Replies Routing 60
Unidentified Host Data 62
Administrative Line 64
ISSUE-RECEIVE-SEND (IRS) 64
Registering the ID 64
Inverted Mode 64
Application Connection Choice 66
Choosing the Daemon 67
VTCPD Application 71
Programming 71
Communicating With the Host 72
VTCPD Application Programming 73
Soliciting Host Data 73
Host Driven Applications 76
Sending Messages 84
Variable Length Messages 86
Receiving Messages 87
Receiving Message Headers 88
Specifying Which VTCPD 91
Freeing the Host Connection 95
VTCPD Message Timing 96
Handling Resource Timeouts 97
VTCPD Debugging 101
Debugging 102
Host Simulation 103
Fault Tolerance 104
VTCPD Troubleshooting 107
Typical Problems 107
Questions and Answers 109

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